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Hi.

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And welcome back to this video.

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So in this lesson, we are going to learn Linux permissions through octal way.

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So basically we are going to give the permissions using numbers.

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So let's see quickly how to do that.

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Now, one thing that you need to remember is till now we have seen how to give the permissions using

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RW X correct.

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And we know that there are three people, which is U, G O, which is the user group and others.

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We have also seen that there are three types of permissions which is read, write and execute.

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Now what special in this Linux permission using octal way you have to remember a lucky number which

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is 4 to 1.

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You always have to remember this in case here as you can see R which is the read represents the number

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for W which is the right represents the number two and X which is the execute represents the number

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one.

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Perfect.

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So this is I hope this is clear with everyone.

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Now let's move forward.

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So in case we need to give this permission to a file X, Y, Z, which is read, write, execute, read,

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write, execute and read, write, execute, which means we are giving basically all the permissions

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to everyone here.

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We need to represent it using octal way.

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Yes.

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So for that, we need to give seven to the first block, which is the user.

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Second block also gets seven and the third block also gets a seven.

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Now, you must have guessed it right from where did this seven come?

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Four plus two plus one gives seven.

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That means r4w2x1, four plus two plus one is seven.

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Hence the user gets on the first block permission seven the group gets the permission seven And others

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also get the permission seven Hence now the command that we need to gift on to the terminal is c mod

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seven, seven, seven and the final name x, y, z to give the permission to a file which is read,

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write, execute, read, write, execute, read, write, execute.

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Perfect.

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I hope this is clear with every one of you.

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We are doing the same thing, but using numbers this time.

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All right.

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So I hope you guys understood how we can give permissions using Oracle way.

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Thank you.